INDEX 
413 
Villi, 90, 68. 
Vinegar-eel, 265. 
Yireo, S40, 3*26. 
Vitelline Membrane, 193. 
Viviparous, 309. 
Vocal Cords, 1S9. 
Voice, of Invertebrates, 1S8. 
“ o f Ve rtebr a tes, 1S9. 
Volute, 2TS, 241. 
Vorticella, 243, 160. 
Vulture, 335, 116. 
Walking-stick, 29T. 
Walrus, 355, 383. 
Warbler, 340. 
Wasp, 304. 
Water-boatman, 297, 265. 
Water-fleas, 2S4, 255. 
Wax-wing, 340. 
Weasel, 355, 348. 
Weevil, 300. 
Whale, 34S, 341, 342. 
“ baleen of, 65, 30. 
“ brain of, 170. 
“ fat of, 39. 
“ mode of feeding of, 50. 
“ month of, 62. 
“ swimming of, 159. 
“ teeth of, 333. 
Whelk, 278, 228. 
“ see Snail. 
White Ant, 295. 
Windpipe, 119, 86. 
Wings, of Bats, 161, 339, 340. 
“ of Birds, 160, 304. 
“ of Insects, 159, 266. 
Wolf, 355, 347. 
Wombat, 343. 
Woodpecker, 335, 320. 
Worms, 263. 
“ absorption in, 94. 
“ alimentary canal of, 77. 
“ blood of, 98. 
“ eye of, 17. 
“ head of, 17. 
“ jaws of, 17. 
“ larva of, 175. 
“ locomotion of, 161. 
“ mouth of, 57. 
“ number of spenes of, 22'i c 
“ proboscis of, IV. 
“ reproduction in, 192. 
“ respiration of, 113, 77. 
“ skin of, 127. 
“ see Earth-worm. 
Wren, 340. 
Yolk, 192. 
Zoological analysis, 236. 
“ barriers, 375. 
“ history, 18. 
“ provinces, 37€> 
Zoology, 19. 
THE END 
